2A3P:
reference: Desulfovibrio desulfuricans G20 Tetraheme Cytochrome Structure at 1.5A and Cytochrome Interaction with Metal Complexes., Pattarkine MV, Tanner JJ, Bottoms CA, Lee YH, Wall JD, J Mol Biol. 2006 Mar 23;. PMID: 16580681

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).